Precision Measurements of the Charged Pion, Charged Kaon, and Proton Electromagnetic Form Factors at s = 13.48 GeV2
- Northwestern University, Evanston, Illinois, 60208 (United States)
Using 20.7 pb-1 of e+e- annihilation data taken at {radical}(s) = 3.671 GeV with the CLEO-c detector, precision measurements of the electromagnetic form factors of the charged pion, charged kaon, and proton have been made for timelike momentum transfer of Q2= 13.48 GeV2 by the reaction e+e- {yields} h+h-. The measurements are the first ever with identified pions and kaons of 2 > 4 GeV2, with the results F{pi}(13.48 GeV2) = 0.075 {+-} 0.008(stat) {+-} 0.005(syst) and FK( 13.48 GeV2) =s 0.063 {+-} 0.004(stat) {+-} 0.001(syst). The result for the proton, assuming G{sub E}{sup p} = G{sub M}{sup p}, is G{sub M}{sup p}(13.48 GeV{sup 2}) 0.014 {+-} 0.002(stat) {+-} 0.001(syst), which is in agreement with earlier results.
- OSTI ID:
- 20873306
- Journal Information:
- AIP Conference Proceedings, Vol. 842, Issue 1; Conference: 17. international conference on particles and nuclei, Santa Fe, NM (United States), 23-30 Oct 2005; Other Information: DOI: 10.1063/1.2220265; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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